Array Shape and dtype

import numpy as np

a = np.array([1, 2, 3, 4, 5])
o = np.ones((2, 3))

print(a.shape)
print(o.shape)
print(a.dtype)
print(np.array([1, 2, 3], dtype=float).dtype)

(5,)
(2, 3)
int64
float64